Medium
Security advisory
An out-of-bounds read/write access flaw was found in the USB emulator of the QEMU in versions before 5.2.0. This issue occurs while processing USB packets from a guest when USBDevice 'setup_len' exceeds its 'data_buf[4096]' in the do_token_in, do_token_out routines. This flaw allows a guest user to crash the QEMU process, resulting in a denial of service, or the potential execution of arbitrary code with the privileges of the QEMU process on the host.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-14364
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 07:05 UTC · Revision 1
Source evidence
An out-of-bounds read/write access flaw was found in the USB emulator of the QEMU in versions before 5.2.0. This issue occurs while processing USB packets from a guest when USBDevice 'setup_len' exceeds its 'data_buf[4096]' in the do_token_in, do_token_out routines. This flaw allows a guest user to crash the QEMU process, resulting in a denial of service, or the potential execution of arbitrary code with the privileges of the QEMU process on the host.
osv:CVE-2020-14364
Complete source record
{
"id": "8031efc7bc1944f69c4322c233742d48ee3a911b04565a82c28c5e2e1b5d6334",
"url": "https://osv.dev/vulnerability/CVE-2020-14364",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-14364",
"summary": "An out-of-bounds read/write access flaw was found in the USB emulator of the QEMU in versions before 5.2.0. This issue occurs while processing USB packets from a guest when USBDevice 'setup_len' exceeds its 'data_buf[4096]' in the do_token_in, do_token_out routines. This flaw allows a guest user to crash the QEMU process, resulting in a denial of service, or the potential execution of arbitrary code with the privileges of the QEMU process on the host.",
"evidence": "osv:CVE-2020-14364",
"products": [],
"severity": "medium",
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],
"modified": "2026-10-24T10:30:48.313392260Z",
"provider": "osv",
"references": [
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JTZQUQ6ZBPMFMNAUQBVJFELYNMUZLL6P/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M52WIRMZL6TZRYZ65N6OAYNNFHV62O2N/",
"https://lists.debian.org/debian-lts-announce/2020/09/msg00013.html",
"https://security.gentoo.org/glsa/202009-14",
"https://security.gentoo.org/glsa/202011-09",
"https://security.netapp.com/advisory/ntap-20200924-0006/",
"https://usn.ubuntu.com/4511-1/",
"https://www.debian.org/security/2020/dsa-4760",
"https://www.openwall.com/lists/oss-security/2020/08/24/2",
"https://www.openwall.com/lists/oss-security/2020/08/24/3",
"https://bugzilla.redhat.com/show_bug.cgi?id=1869201"
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},
"source_id": "core-osv",
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"published_at": "2020-08-31T18:15:12.827+00:00"
}